[AVX-512] Lower SSE/AVX cvtdq2ps intrinsics directly to ISD::SINT_TO_FP so they can use EVEX instructions when available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286056 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed